.main {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    header {
        width: 100%;
        height: 1rem;
        background-color: red;
        color: #fff;
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: .5rem;
    }

    .list {
        flex: 1;
        overflow: hidden;
        position: relative;
        &::before{
            content:attr(down);
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: .6rem;
            line-height: .6rem;
            text-align: center;
            background-color: mediumvioletred;
            color: #fff;
        }
    }
}
